Microwave burst of November 17, 1991: Evidence of fragmented particle injection into a coronal loop

G. D. Fleishman, A. V. Stepanov, Yu F. Yurovsky

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

The unusual event of November 17, 1991 07:04 UT, observed at 2.5 and 2.85 GHz, is analysed. The event reveals the sophisticated superfine time structure including sudden reductions and quasi-periodic pulsations. We shown that the sudden reductions (≈30-100 ms) can be driven by upward injected ≳100 keV electron beams filling the losscone of the coronal magnetic trap. The nonlinear oscillations of Langmuir waves provide the best fit for the pulsation observed. A reduced steady-state level of the pulsation phase is connected with quasi-continuous injection of electrons. The physical parameters of the radio source are found for the event.

Original languageEnglish (US)
Pages (from-to)205-210
Number of pages6
JournalSpace Science Reviews
Volume68
Issue number1-4
DOIs
StatePublished - May 1 1994
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

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